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dc.contributor.authorMelchior, Peter M.pt_BR
dc.contributor.authorSuchyta, Ericpt_BR
dc.contributor.authorHuff, Ericpt_BR
dc.contributor.authorHirsch, Michael Stefanpt_BR
dc.contributor.authorKacprzak, Tomaszpt_BR
dc.contributor.authorRykoff, Elipt_BR
dc.contributor.authorGruen, Danielpt_BR
dc.contributor.authorArmstrong, Robertpt_BR
dc.contributor.authorBacon, David J.pt_BR
dc.contributor.authorBechtol, Keithpt_BR
dc.contributor.authorBernstein, Gary M.pt_BR
dc.contributor.authorBridle, Sarah Louisept_BR
dc.contributor.authorClampitt, Josephpt_BR
dc.contributor.authorHonscheid, K.pt_BR
dc.contributor.authorJain, Bhuvneshpt_BR
dc.contributor.authorJouvel, Stéphaniept_BR
dc.contributor.authorKrause, Elisabethpt_BR
dc.contributor.authorLin, H.pt_BR
dc.contributor.authorMacCrann, Niallpt_BR
dc.contributor.authorPatton, Kennethpt_BR
dc.contributor.authorPlazas Malagón, Andrés Alejandropt_BR
dc.contributor.authorRowe, Barnaby T. P.pt_BR
dc.contributor.authorVikram, Vinupt_BR
dc.contributor.authorWilcox, Harry Georgept_BR
dc.contributor.authorYoung, Julia Cheekpt_BR
dc.contributor.authorZuntz, J.pt_BR
dc.contributor.authorAbbott, Timothy M. C.pt_BR
dc.contributor.authorAbdalla, Filipe B.pt_BR
dc.contributor.authorAllam, Sahar S.pt_BR
dc.contributor.authorBanerji, M.pt_BR
dc.contributor.authorBernstein, Joseph P.pt_BR
dc.contributor.authorBernstein, Rebecca A.pt_BR
dc.contributor.authorBertin, Emmanuelpt_BR
dc.contributor.authorBuckley-Geer, Elizabethpt_BR
dc.contributor.authorBurke, David Lylept_BR
dc.contributor.authorCastander Serentill, Francisco Javierpt_BR
dc.contributor.authorCosta, Luiz N. dapt_BR
dc.contributor.authorCunha, Carlos Eduardopt_BR
dc.contributor.authorDePoy, Darren L.pt_BR
dc.contributor.authorDesai, S.pt_BR
dc.contributor.authorDiehl, H. Thomaspt_BR
dc.contributor.authorDoel, Peterpt_BR
dc.contributor.authorEstrada, Juanpt_BR
dc.contributor.authorEvrard, August E.pt_BR
dc.contributor.authorFausti Neto, Angelopt_BR
dc.contributor.authorFernandez, Enriquept_BR
dc.contributor.authorFinley, David A.pt_BR
dc.contributor.authorFlaugher, Brennapt_BR
dc.contributor.authorFrieman, Joshua A.pt_BR
dc.contributor.authorGaztañaga, Enriquept_BR
dc.contributor.authorGerdes, David W.pt_BR
dc.contributor.authorGruendl, Robert A.pt_BR
dc.contributor.authorGutierrez, Gaston R.pt_BR
dc.contributor.authorJarvis, Michaelpt_BR
dc.contributor.authorKarliner, Ingapt_BR
dc.contributor.authorKent, Stephen M.pt_BR
dc.contributor.authorKuehn, Kylerpt_BR
dc.contributor.authorKuropatkin, Nikolay P.pt_BR
dc.contributor.authorLahav, Oferpt_BR
dc.contributor.authorMaia, Marcio Antonio Geimbapt_BR
dc.contributor.authorMakler, Martínpt_BR
dc.contributor.authorMarriner, John P.pt_BR
dc.contributor.authorMarshall, Jennifer L.pt_BR
dc.contributor.authorMerritt, K. Wyattpt_BR
dc.contributor.authorMiller, Christopher J.pt_BR
dc.contributor.authorMiquel, Ramonpt_BR
dc.contributor.authorMohr, Joseph J.pt_BR
dc.contributor.authorNeilsen, Eric H.pt_BR
dc.contributor.authorNichol, Robert C.pt_BR
dc.contributor.authorNord, Brian Dennispt_BR
dc.contributor.authorReil, Kevinpt_BR
dc.contributor.authorRoe, Natalie A.pt_BR
dc.contributor.authorRoodman, Aaronpt_BR
dc.contributor.authorSako, Masaopt_BR
dc.contributor.authorSanchez-Alvaro, Eusebiopt_BR
dc.contributor.authorSantiago, Basilio Xavierpt_BR
dc.contributor.authorSchindler, Rafe H.pt_BR
dc.contributor.authorSchubnell, Michaelpt_BR
dc.contributor.authorSevilla Noarbe, Ignaciopt_BR
dc.contributor.authorSheldon, Erinpt_BR
dc.contributor.authorSmith, Robert Christopherpt_BR
dc.contributor.authorSoares-Santos, Marcellept_BR
dc.contributor.authorSwanson, Molly E. C.pt_BR
dc.contributor.authorSypniewski, Adam J.pt_BR
dc.contributor.authorTarle, Gregorypt_BR
dc.contributor.authorThaler, Jon J.pt_BR
dc.contributor.authorThomas, D.pt_BR
dc.contributor.authorTucker, Douglas L.pt_BR
dc.contributor.authorWalker, Alistairpt_BR
dc.contributor.authorWechsler, Risa H.pt_BR
dc.contributor.authorWeller, Jochenpt_BR
dc.contributor.authorWester, William Carlpt_BR
dc.date.accessioned2015-09-18T01:58:25Zpt_BR
dc.date.issued2015pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/126973pt_BR
dc.description.abstractWe measure the weak lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy Survey (DES). This pathfinder study is meant to (1) validate the Dark Energy Camera (DECam) imager for the task of measuring weak lensing shapes, and (2) utilize DECam’s large field of view to map out the clusters and their environments over 90 arcmin. We conduct a series of rigorous tests on astrometry, photometry, image quality, point spread function (PSF) modelling, and shear measurement accuracy to single out flaws in the data and also to identify the optimal data processing steps and parameters. We find Science Verification data from DECam to be suitable for the lensing analysis described in this paper. The PSF is generally well behaved, but the modelling is rendered difficult by a flux-dependent PSF width and ellipticity. We employ photometric redshifts to distinguish between foreground and background galaxies, and a red-sequence cluster finder to provide cluster richness estimates and cluster–galaxy distributions. By fitting Navarro–Frenk–White profiles to the clusters in this study, we determine weak lensing masses that are in agreement with previous work. For Abell 3261, we provide the first estimates of redshift, weak lensing mass, and richness. In addition, the cluster–galaxy distributions indicate the presence of filamentary structures attached to 1E 0657−56 and RXC J2248.7−4431, stretching out as far as 1◦(approximately 20 Mpc), showcasing the potential of DECam and DES for detailed studies of degree-scale features on the sky.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the Royal Astronomical Society. Oxford. Vol. 449, no. 3 (May 2015), p. 2219-2238pt_BR
dc.rightsOpen Accessen
dc.subjectGravitational lensing: weaken
dc.subjectAglomerados de galaxiaspt_BR
dc.subjectGalaxies: clusters: individual:RXCJ2248.7en
dc.subject4431en
dc.subjectGalaxies: clusters: individual: 1E 0657−56en
dc.subjectGalaxies: clusters: individual: SCSO J233227en
dc.subject535827en
dc.subjectGalaxies: clusters: individual: Abell 3261en
dc.subjectCosmology: observationsen
dc.titleMass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification datapt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000972645pt_BR
dc.type.originEstrangeiropt_BR


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